Chromatography Books

Book SynopsisCyclodextrins can form complexes with a wide variety of organic and inorganic compounds, a property which can prove useful when trying to separate complex mixtures. This book provides an up-to-date and critical evaluation of the application of cyclodextrins in many fields of chromatography (including thin layer, gas-liquid, high performance liquid and supercritical fluid chromatography; capillary electrophoresis; and isotacophoresis). Whilst mainly practical in nature, the book also looks briefly at the theoretical background for the various techniques. Any professional working with chromatography will welcome this unique book as both a practical compilation of methods and a source of reference to the literature regarding the use and impact of cyclodextrins in chromatography.Trade ReviewA good addition to all libraries of pharmaceutical and agrochemical industries and also academic institutions, drug regulatory agencies and environmental agencies. * Biomedical Chromatography, May 2004 (Hassan Y Aboul-Enein) *"... the book is well written and produced, and it can be recommended to anyone interested in an overview of the impact of CD complexes on analytical chromatography ..." * Trends in Analytical Chemistry, Vol 22, No 9, 2003 *"... valuable for anyone working with CDs in chromatographic methods ... the book is well written as a monograph that provides a good review of applications of CDs in chromatographic and electromigration methods. " * Analytical and Bioanalytical Chemistry, 2004, 379 *Table of ContentsPrinciples of Chromatography; Chemistry and Physicochemistry of Cyclodextrins; Use of Cyclodextrins in Gas-Liquid Chromatography; Supercritical Fluid Chromatography; Use of Cyclodextrins in Liquid Chromatography; Use of Cyclodextrins in Electrophoretic Techniques; Subject Index.

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Book SynopsisHigh-temperature liquid chromatography has attracted much interest in recent years but has not yet recognized its full potential in the chromatographic community. There is a widespread reluctance in industry to use temperature to speed up the separation process, influence the selectivity of a separation or implement novel detection techniques. However, the technology has now matured and could revolutionize chromatography as we see it today. Better equipment, such as heating systems able to generate faster heating rates, is becoming more readily available. Also, columns based on silica gel, which can withstand higher temperatures for an extended period, are now being introduced. Nevertheless, further technological and methodical efforts are needed to establish the method in a regulated environment like the pharmaceutical industry. This is the only text to cover all the practical aspects, as well as the underlying theoretical principles, of setting up an HPLC system for high temperature operation. It is not intended solely for academics but will also benefit the researcher interested in more practical considerations. The author is a recognized expert and has conducted several studies with partners from industry to validate the method. Many real examples from these studies have been included in the book. The aim is to support practitioners in the creation of their own protocols without the need to rely solely on trial and error. The book starts with a brief definition of high temperature liquid chromatography before going on to cover: system set up; the heating system; mobile phase considerations; suitable stationary phases; method development using temperature programming; analyte stability, and special hyphenation techniques using superheated water as a mobile phase. In each chapter, experimental data is used to illustrate the main statements and the advantages over conventional HPLC are evaluated. The book concludes with a critical outlook on further developments and applications underlining the necessary advances needed to make high temperature HPLC more robust.Trade ReviewHigh-temperature liquid chromatography has attracted much interest in recent years but has not yet recognized its full potential in the chromatographic community. There is a widespread reluctance in industry to use temperature to speed up the separation process, influence the selectivity of a separation or implement novel detection techniques. However, the technology has now matured and could revolutionize chromatography as we see it today. Better equipment, such as heating systems able to generate faster heating rates, is becoming more readily available. Also, columns based on silica gel, which can withstand higher temperatures for an extended period, are now being introduced. Nevertheless, further technological and methodical efforts are needed to establish the method in a regulated environment like the pharmaceutical industry. This is the only text to cover all the practical aspects, as well as the underlying theoretical principles, of setting up an HPLC system for high-temperature operation. It is not intended solely for academics but will also benefit the researcher interested in more practical considerations. The author is a recognized expert and has conducted several studies with partners from industry to validate the method. Many real examples from these studies have been included in the book. The aim is to support practitioners in the creation of their own protocols without the need to rely solely on trial and error. The book starts with a brief definition of high-temperature liquid chromatography before going on to cover: system set up; the heating system; mobile phase considerations; suitable stationary phases; method development using temperature programming; analyte stability, and special hyphenation techniques using superheated water as a mobile phase. In each chapter, experimental data is used to illustrate the main statements and the advantages over conventional HPLC are evaluated. The book concludes with a critical outlook on further developments and applications underlining the necessary advances needed to make high-temperature HPLC more robust.Table of ContentsA brief definition of high-temperature liquid chromatography; System set up for high temperature liquid chromatography; The heating system; Mobile phase considerations; Suitable stationary phases; Method development using temperature programming Analyte stability; Special hyphenation techniques using superheated water as a mobile phase; A critical outlook

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Book SynopsisA Century of Separation Science presents an historical, as well as technical, perspective of the critical developments in separation science since 1900, covering recent advances in chromatography, electrophoresis, field-flow fractionation, countercurrent chromatography, and supercritical fluid chromatography for high-speed and high-throughput analysis. The author also discusses the theory of gradient elution and solvent selection for optimal separation in liquid chromatography.Table of ContentsChromatography - the separation technique of the 20th century; Mikhail Semenovich Tswett - the father of modern chromatography; from crushed bricks to microchips; thin layer chromatography; from thin layer chromatography to high performance thin layer chromatography to planar chromatography; the way it was; gas chromatography - a personal retrospective; the evolution of capillary column gas chromatography - a historical overview; forty years of gas chromatography; liquid crystals stationary phases in gas chromatography - a historical prospective; quantitative retention-eluent composition relationships in partition and adsorption chromatography; hollow sticks with mud inside - the technology of HPLC columns; on the way to a general theory of gradient elution; solvent selection for optimal separation in liquid chromatography; my life in separation sciences - study of separation mechanisms.

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Book SynopsisThere is a dramatic rise of novel drug use due to the increased popularity of so-called designer drugs. These synthetic drugs can be illegal in some countries, but legal in others and novel compounds unknown to drug chemistry emerge monthly. This thoughtfully constructed edited reference presents the main chromatographic methodologies and strategies used to discover and analyze novel designer drugs contained in diverse biological materials. The methods are based on molecular characteristics of the drugs belonging to each individual class of compounds, so it will be clear how the current methods are adaptable to future new drugs that appear in the market.Table of ContentsIntroduction. Designer Drugs: Legislating for Tomorrow Through the Use of Class Definitions and Pharmacophore Principles. Alternative Legislation with Designer Drugs. Biological Precursors of Designer Drugs. Liquid Chromatography – Mass Spectrometry in Analysis of Designer Drugs. Ambient Plasma Ionization Techniques in Forensic Analysis. Application of LC-QTOFMS for the Identification of the Structure of New Psychoactive Substances. Rapid Generation of Metabolites by Electrochemical Method. Gas Chromatography – Mass Spectrometry in Analysis of Designer Drugs. NMR Spectroscopy in the Analysis of Designer Drugs. Preparation of Biological Material for Toxicological Analysis. Discrimination among the Designer Drug Isomers by Chromatographic and Spectrometric Methods. Liquid Chromatography-Mass Spectrometry and Ambient Mass Spectrometry Applied to the Analysis of Synthetic Cannabinoids. Cathinone Derivatives and Their Analysis. NBOMe Derivatives of Phenylethylamines and Their Analysis. 2C Derivatives of Phenylethylamines and Their Analysis. Modern Techniques for the Analysis of Piperazines. Fenantyl Analogues and Their Analysis. Modern Techniques for the Identification of Tryptamines. Toxicological Analysis of New Opioids. Toxicological Analysis of Designer Benzodiazepines. Thin-layer Chromatography in the Analysis of Designer Drugs

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Book SynopsisThis result-oriented primer provides a practical guide to key approaches, methodologies and tools for designing, modelling and simulating chromatographic processes. With an emphasis on real-world applications, this is a must-have for practitioners and researchers working in chemical, biochemical, food and pharmaceutical engineering.Table of Contents1. An approach to modeling chromatographic processes; 2. Linear chromatography: the Russian Lego; 3. Non-linear chromatography: equilibrium theory; 4. Fluid-solid phase equilibria; 5. Mass transfer; 6. Hydrodynamics of chromatographic columns; 7. Simulating chromatographic columns; 8. Counter-current systems; 9. Presentation of chromatographic modes and their optimization; 10. Addressing a few industrial problems; 11. Conclusion.

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a huge range and FREE tracked UK delivery on ALL orders.

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a huge range and FREE tracked UK delivery on ALL orders.

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Book SynopsisGas Chromatography: History, Methods and Applications focuses on the main applications of gas chromatography in clinical and forensic toxicology, mainly in the determination of drugs of abuse including the new psychoactive substances in several types of biological matrices. The authors go on to investigated the analysis of gaseous or volatile substances using sensor gas chromatography equipped with a semiconductor gas sensor detector. The simplicity, ease of handling, and high sensitivity of this method allow results to be obtained rapidly, which may provide valuable information for forensic diagnosis. This compilation addresses the way in which food adulteration practices are potentially harmful to human health and so food safety and authenticity constitute an important issue in food chemistry. The chemical composition of foodstuffs is an excellent indicator of quality, origin, authenticity and/or adulteration. The concluding study aims to determine the organic compounds of vinasse through gas chromatography-mass spectrometry GC-MS. Vinasse is a byproduct of ethanol and poses long-term risk to public health because of its persistent and toxic nature.Table of ContentsPreface; The Role of Gas Chromatography in Clinical and Forensic Toxicology; Application of Sensor Gas Chromatography in Forensic Medicine; Trends of Gas Chromatography-Mass Spectrometry Techniques in Food Authentication; Gas Chromatography-Mass Spectrometry Analysis of Sugarcane Vinasse; Index.

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Book SynopsisFocusing on what has been one of the driving forces behind the development of lab-on-a-chip devices, Separation Methods in Microanalytical Systems explores the implementation, realization, and operation of separation techniques and related complex workflows on microfabricated devices. The book details the design, manufacture, and integration of diverse components needed to perform an entire analytical procedure on a single miniaturized device. The content applies to a diversity of disciplines including chemical analysis, biomedical diagnostics, environmental monitoring, and drug discovery.Separation Methods in Microanalytical Systems lays its theoretical background in a way that scientists from varied disciplines can approach. The book describes factors that influence the performance of separation, such as microfluidic handling, sample pre-treatment, and detection. It also conveys fabrication and material issues, design challenges, and practical considerations. Trade Review“This is just what I have been looking for. To my knowledge it’s the first time that anyone has put together a definitive book on the subject... The editors have done an excellent job in ensuring that the authors keep to their brief and do not cover data or examples give by other authors, but [still] have allowed the authors their individual styles... it is [of] great value, a book every researcher and student should have.”— P. Myers, in Chromatographia, 2006, vol. 63Table of ContentsAnalytical Microsystems: A Bird’s Eye View. Microfluidics: Some Basics. Microfabrication and Integration. New Tools: Scalar Imaging, Velocimetry, and Simulation. Transport Modes: Realizations and Practical Considerations. Pressure-Driven Separation Methods on a Chip. Transverse Transport in Microsystems: Theory and Applications. Electro-Driven Separation Methods on Chips. Gas Chromatography on Microchips. Sample Preparation on Microchips. Detection on Microchips: Principles, Challenges, Hyphenation, and Integration. Analytical Applications on Microchips. Index

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Book SynopsisDriven by the widespread growth of proteomic practices, protein separation techniques have been refined to minimize variability, optimize particular applications, and adapt to user preferences in the analysis of proteins. Separation Methods in Proteomics provides a comprehensive examination of all major separation techniques for proteomics research. Written as a compilation of hands-on methods exemplified by the work of several recognized leaders in the field, this book may serve as a guide for selection of the optimal separation strategies to solve particular biological problems. Recent progress in the development of robust analytical techniques and instrumentation has created the need for good quality biological samples that are subject to analysis. Emphasizing the importance of sample preparation, the book explains how proteomes can be divided into smaller, less complicated subproteomes' for individual analysis. It also highlights several hybrid approaches that taTable of ContentsSample Preparation. Sample Prefractionation and Analyses. Applications of Electrophoresis in Proteomics. Applications of High-Performance Liquid Chromatography. Related Techniques.

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Book SynopsisThis work introduces scientists of all disciplines to the chromatographic process and how it functions. The basic principles of chromatographic separation and specific chromatographic procedures, including gas, liquid and thin-layer chromatography, are covered. For each separation method the book details its characteristics, the instrumentation required, the procedures necessary for effective use, areas of application and examples of its use.;This work is intended for analytical chemists, laboratory technicians, and upper-level undergraduate and graduate students in analytical chemistry or separation science courses.Trade Review"Excellent discussions and practical advice are provided for the selection of stationary and mobile phases, as well as the exact type of chromatography needed to accomplish a separation. "---Analytical Chemistry News & Features ". . .a very readable and. . .informative book which is highly recommended for any scientist who needs to use separation techniques as part of their work but is not a separations expert. "---Bioseparation ". . .a[n]. . .instructive presentation of basic intermolecular forces and processes playing a substantial role in understanding the selectivity and resolution of separations, and a nice broad set of practical examples of applications. "---Journal of Chromatography ATable of ContentsThe chromatographic separation; the mechanism of retention; peak dispersion; qualitative analysis; quantitative analysis. Part 1 Gas chromatography: the gas chromatograph; gas chromatography detectors; gas chromatography columns; gas chromatography applications; the liquid chromatograph; liquid chromatography detectors; liquid chromatography columns; liquid chromatography applications. Part 2 Thin layer chromatography: TLC apparatus; thin-layer chromatography techniques.

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Book SynopsisHandbook of Chromatography: Analysis of Lipids provides a valuable review of state-of-the-art applications of chromatographic techniques (TLC, GC, HPLC) and other analytical techniques. Much of this volume is devoted to applications of HPLC (including supercritical fluid chromatography) in the analysis of lipids such as fatty acids, oxygenated fatty acids, enantiomeric acyl- and alkylglycerols, and lipoproteins. The handbook also provides extensive coverage of applications of combinations of various chromatographic techniques used in the analysis of ozonides, anacardic acids, glycerophospholipids, products of lipolysis, artifacts and contaminants in edible fats, acylated proteins, non-caloric lipids, lipophilic vitamins, acyl-Coenzyme A thioesters, dolichols, mycolic acids, technical fats and fat products, and liposomes. Handbook of Chromatography: Analysis of Lipids will be a useful reference for oil chemists, biochemists, fat science technologists, and other scieTable of Contents: Obtaining and Handling Biological Materials and Prefractionating Extracts for Lipid Analysis. Analysis of Lipids by Planar Chromatography. Imaging Plate System for Radio Luminographic Detection of Lipids on Thin-Layer Plates. High Performance Liquid Chromatography as a Tool for the Lipid Chemist and Biochemist. High Performance Liquid Chromatography of Fatty Acids. Analysis of Lipids by On-Line Coupled Liquid Chromatography-Gas Chromatography. Supercritical Fluid Chromatographic Analysis of Lipids. High Performance Liquid Chromatography of Oxygenated Fatty Acids Including Enantiomer Separation. High Performance Liquid Chromatography of Lipoproteins. High Performance Liquid Chromatography of Acylglycerols and Alkylglycerols. Gas Chromatography of Triacylglycerols and Other Lipids in Packed Columns. Gas Chromatography of Fatty Acids and Acylglycerols in Capillary Columns. Radio-Gas Chromatography of Lipids. Ozonides and Ozonolysis of Lipids. Anacardic Acids. Glycerophospholipids. Artifacts, Contaminants and Autoxidation Products of Edible Fats and Oils. Acylated Proteins: Identification of the Attached Fatty Acids and Their Linkages. Non-Caloric Lipids. Lipophilic Vitamins. Acyl-CoA Thioesters. Dolichols and Dolichyl Derivatives. Mycolic Acids. Technical Fats and Oils and Products Derived Therefrom. Analysis of Natural Fats and Oils by Ammonia Negative Ion Tandem Mass Spectrometry. Characterization of Liposomes. Phospholipids from Pulmonary Surfactant and Amniotic Fluid. Large-Scale Chromatography of Lipids. Products of Lipolysis. Index. FEATURES:

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Book SynopsisPreparative Layer Chromatography explains how this method is used for separating large quantities of mixtures containing a wide variety of important compounds. It offers a broad review of preparative layer chromatography (PLC) applications and adaptable working procedures for microseparations involving organic, inorganic, and organometallic compounds. The book contains theoretical background, chemical principles, and relevance of preparative layer chromatography (PLC) to a wide range of applications, particularly in the study of pharmaceuticals and biochemistry. Written by many of the best known and most knowledgeable specialists in the field, the chapters describe all the necessary techniques, current procedures, and superior strategies for selecting the most suitable eluents and designing application-specific PLC systems based on the data being sought. They provide comprehensive instructions, surrounding issues, and suggestions for optimizing optional working techniques withiTrade Review"...A valuable and important supplement to the existing vast chromatographic literature, [this book] demonstrates the potential of planar chromatography for separation and isolation of pure compounds, even from very complex mixtures."-Journal of Liquid Chromatography, August 2006"The contributor[s']...experience integrated in the monograph forms a good basis for the readers."-Instrumentation Science & Technology, August 2006"The [first] eight chapters provide sound theoretical and methodological foundations of PLC. Numerous applications of PLC are reviewed in the second section, based on extensive literature. ...The application reviews provide numerous examples of solving experimental difficulties for the separation of complex mixtures."-Preparative Biochemistry & Biotechnology, August 2006"The book is quite well produced and has a large number of illustrations . . . this volume is a worthy addition to the PLC literature, and a good place to start for the novice." – I.D. Wilson, in Chromatographia, January 2008, Vol. 67, No. 1/2Table of ContentsIntroduction. Adsorption Planar Chromatography in the Non-linear Range: Selected Drawbacks and Selected Guidelines. Sorbents and Precoated Layers in PLC. Selection and Optimization of the Mobile Phase for PLC. Sample Application and Development of Layers. On Methodical Possibilities of the Horizontal Chambers in PLC. Location of Separated Zones by Use of Visualization Reagents, UV Absorbance on Layers Containing a Fluorescent Indicator, and Densitometry. Additional Detection Methods for Separated Zones and Recovery of Substances from the Layer. Medical Applications of PLC. PLC of Hydrophobic Vitamins. PLC of Natural Mixtures. Application of PLC to Lipids. The Use of PLC for Separation of Natural Pigments. Application of PLC to Inorganics and Organometallics. PLC in a Clean-up and Group Fractionaction of Geochemical Samples: A Review of the Commonly Applied Techniques. The Use of PLC for Isolation and Identification of Unknown Compounds from the Frankincense Resin: Strategies for Finding Marker Substances.

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Book SynopsisThin layer chromatography (TLC) is well suited for performing enantioseparations for research as well as larger-scale applications. A fast, inexpensive, and versatile separation technique, there are many practical considerations that contribute to its effectiveness. Thin Layer Chromatography in Chiral Separations and Analysis is the first book to focus solely on the theory, capabilities, and applications of TLC for direct and indirect enantioseparations.The first part of the book examines the fundamental principles of chirality and TLC. It describes the necessary materials, laboratory equipment, procedures, and strategies for the separation, quantification, isolation, and analysis of chiral compounds. The second part evaluates the real-world enantioseparations and densitometric analyses. Emphasizing pharmaceutical applications, the book discusses chiral separation mechanisms and methods for analyzing the chiral purity of diastereoisomers, amino acids, beta-blockers, and NSAIDS. Topics also include commercial stationary phases and chiral modifiers of mobile phases. Thin Layer Chromatography in Chiral Separations and Analysis presents a unified perspective of theory and experimental details underlying the collective developments in the field. The book offers scientists in a variety of disciplines and levels of expertise a complete guide to understanding the current and potential applications of chiral TLC. Table of ContentsIntroduction. Chirality. Commercial Stationary Phases for Enantioseparations. Planar Chromatographic Enantioseparations on Non-commercial CSPs. Planar Chromatographic Enantioseparations on Non-Commercial CCPs. Chiral Modifiers of Mobile Phases. An Overview of the Chiral Separation Mechanisms. Separation of Diastereoisomers by means of TLC. Selected Bottlenecks of Densitometric Detection with Chiral Analytes. Chirality of Pharmaceutical Product Racemates. Chiral Separation of the Selected β-blockers. Chiral Separation of Aminoacid Enantiomers. Chiral Separation of NSAIDs. Determination of Components in Selected Drug Racemates. Chiral Separations using Marfey’s Reagent.

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Book SynopsisIon-Pair Chromatography (IPC) is a rapidly evolving method for difficult analyses of organic and inorganic ions and ionogenic, neutral, and zwitterionic compounds. The possibilities for this technology continue to grow as novel ion-pair reagents and strategies are introduced at an accelerated level. Compensating for a dearth in the literature, Ion-Pair Chromatography and Related Techniques details the basics and the evolution of this established and easily tunable technique and explains its influence on similar methods.Theoretical modeling to applicationProviding a thorough exploration of the multiplicity of interactions involved in an IPC system, this book emphasizes the progress from theoretical modeling to application. It explores the practical potential of IPC in the life science, medicine, pharmacology, forensic, food, and environmental sectors. It examines the upgrade of column technology and instrumentation to imTrade Review"… provides a broad coverage of the subject of IPC with regard to theoretical features, the parameters influencing the results and the applications. The reader will find a discussion of all aspects of IPC, beginning with the theoretical basis of this technique and its retention mechanism. The author introduces to the reader all the issues connected with stationary phases, ionpair reagents, organic modifiers, the pH of the eluent, temperature, and various detection techniques which may be used in IPC. One can also find much practical advice on how to start with IPC and how to improve results by the use of IPC."—Analytical and Bioanalytical Chemistry, April 2012Table of ContentsIntroduction. Electrolyte Solutions and Historical Concept of Ion-Pairing. Retention Modeling as Function of Mobile Phase Composition. Modeling of Retention as a Function of Analyte Nature. Stationary Phases. Developments in Column Technology and Fast IPC. Ion Pairing Reagents. Organic Modifiers. Role of Eluent pH in IPC. Temperature. Special IPC Modes and Variations. Detection and Combination. Examples of Applications. IPC versus Competitive Techniques. Ion-Pairing in Different Analytical Techniques. Non-Separative Applications of IPC. Conclusions and Future Research Needs.

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Book SynopsisUsed routinely in drug control laboratories, forensic laboratories, and as a research tool, thin layer chromatography (TLC) plays an important role in pharmaceutical drug analyses. It requires less complicated or expensive equipment than other techniques, and has the ability to be performed under field conditions. Filling the need for an up-to-date, complete reference, Thin Layer Chromatography in Drug Analysis covers the most important methods in pharmaceutical applications of TLC, namely, analysis of bulk drug material and pharmaceutical formulations, degradation studies, analysis of biological samples, optimization of the separation of drug classes, and lipophilicity estimation.The book is divided into two parts. Part I is devoted to general topics related to TLC in the context of drug analysis, including the chemical basis of TLC, sample pleparation, the optimization of layers and mobile phases, detection and quantification, analysis of ionic compounds, and separaTable of ContentsPart I Theory of Thin Layer Chromatography in Context of Pharmaceutical Analysis. Overview of Drug Analysis and Structure of the Book. Chemistry of Drugs and Its Influence on Retention. Sorbents and Layers Used in Drug Analysis. Optimization of Mobile Phase Composition. Chromatographic Analysis of Ionic Drugs. Ionic Liquid Additives to Mobile Phases. Chromatographic Analysis of Chiral Drugs. Chambers, Sample Application, and New Devices in the Chromatography of Drugs. 2D Planar Chromatography. Quantitative Detection of Drugs by Densitometry and Video Scanning. Statistical Evaluation and Validation of Quantitative Methods of Drug Analysis. Detection and Identification in TLC Drug Analysis. TLC Determination of Drug Lipophilicity. Screening of Substandard and Fake Drugs in Underdeveloped Countries by TLC. Part II Planar Chromatography of Particular Drug Groups. TLC of Antidepressants and Neuroleptics. TLC of Anxiolytics and Sedatives. TLC of Morphine Analogs. TLC of Nonopioid Analgesics, Anti-Inflammatics, and Antimigraine Drugs. TLC of Ergot Alkaloid Derivatives. Thin-Layer Chromatography of Anesthetics. TLC of Psychostimulants. TLC of Antiepileptics. TLC of Alzheimer’s Disease Medicines. TLC of Antiparkinsonians. Thin-Layer Chromatography of Cardiac Drugs. TLC of Antihypertensive and Antihypotensive Drugs. TLC of Beta-Blockers and Beta-Agonists. TLC of Antithrombotics. TLC of Antihyperlipidemics. TLC of Spasmolytics. TLC of Mucolytic, Antitussive, and Antiasthmatic Drugs. TLC of Neuromuscular Blockers. TLC of Antiulcers. TLC of Antiemetic Drugs. TLC of Steroids and Analogs. TLC of Drugs Used in Obesity and Sexual Dysfunction Treatment. TLC of Prostaglandins. TLC of Diuretics. TLC of Antidiabetics. TLC of Antihistamines. TLC of Vitamins Including Nicotinic Acid Derivatives. TLC of Antiseptics. TLC of Sulfonamides. TLC of Quinolones. Thin-Layer Chromatography of Tuberculostatic Drugs. TLC of Antifungal and Antiprotozoal Drugs. TLC of β-Lactam Antibiotics. TLC of Other Antibiotics. Thin-Layer Chromatography of Antiviral Drugs. Thin-Layer Chromatography of Anticancer Drugs. Uncertainty Factors in the Enantioseparation of Chiral Drugs on Silica Gel Layers. Index.

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Book SynopsisIncreased environmental consciousness within the scientific community has spurred the search for environmentally friendly processes as alternatives to conventional organic solvents. In the past two decades, numerous advancesincluding the use of ionic liquidshave made it possible to develop substitutes for some toxic solvents. Ionic liquids are widely recognized as suitable for use in organic reactions and can also improve the control of product distribution, enhanced reactivity, ease of product recovery, catalyst immobilization, and recycling.Environmentally Friendly Syntheses Using Ionic Liquids presents the latest developments in the field. It also reviews the latest applications in a wide range of fields including biotechnology, nuclear science, medicine, pharmaceuticals, environmental science, and organic and inorganic chemistryall from the standpoint of green sustainable chemistry.Growing interest in the field of ionic liquids will define newer and uTable of ContentsIntroduction. Organic Synthesis Using an Ionic Liquid as a Reaction Medium. Biocatalysis in Ionic Liquids. Deep Eutectic Solvents: Promising Solvents and Nonsolvent Solutions for Biocatalysis. Synthesis and Applications of Ionic Liquids as Pharmaceutical Materials. Ionic Liquids as Versatile Media for Chemical Reactions.

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Book SynopsisAdvanced Separations by Specialized Sorbents opens a new window into sorbent materials, presenting fundamental principles for their syntheses and adsorption properties. The book presents advanced techniques used to create specialized sorbents with a wide range of functions that can be used to enhance the separation and/or purification of useful bioactive compounds, heavy metals, dyes, and other substances. It discusses the most recent developments in the field of separation processes, covering specialized sorbents such as monolith cryogels, composite hydrogels, metal-impregnated ion exchangers, and molecularly imprinted polymers. The book provides a comprehensive discussion of the selectivity in separation processes by composite materials based on synthetic polymers/biopolymers and inorganic particles. It is a comprehensive resource for academic and research scientists as well as students interested in the preparation, characterization, and applicationTable of ContentsComposite Hydrogel Materials. Cryogels for Affinity Chromatography. Particulate/Cell Separations Using Macroporous Monolithic Matrices. Polysaccharide-Based Composite Hydrogels for Removal of Pollutants from Water. Iron Oxide Magnetic Composite Adsorbents for Heavy Metal Pollutant Removal. Biopolymers-Zeolites Composites as Biosorbents for Separation Processes. Metal-Impregnated Ion Exchanger for Selective Removal and Recovery of Trace Phosphate. Molecularly Imprinted Polymers for Water Polishing. Biopolymer-Based Sorbents for Metal Sorption. Mixed-Mode Sorbents in Solid-Phase Extraction. Interpenetrating Polymer Network Composite Hydrogels and Their Applications in Separation Processes. Toward Adaptive Self-Informed Membranes.

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Book SynopsisThis book provides a comprehensive overview of ionic liquid based separation techniques. The glimpse of thermodynamic predictive models along with global optimization techniques will help readers understand the separation techniques at molecular and macroscopic levels. Experimental and characterization techniques are coupled with model based predictions so as to provide multicomponent data for the scientific community. The models will focus more on the a-priori based predictions which gives higher emphasis on hydrogen-bonded systems. Particle Swarm Optimization (PSO) technique will also eventually help the readers to apply optimization technique to an extraction process. The overriding goal of this work is to provide pathways for leading engineers and researchers toward a clear understanding and firm grasp of the phase equilibria of Ionic Liquid systems.Table of Contents1. Introduction2. Liquid-liquid Equilibria: Experiments and Predictions by Gibb’s free energy models3. COSMO-SAC: A predictive model for calculating thermodynamic properties on a-priori basis4. Application of COSMO-SAC in complex phase behavior: Vapor-Liquid-Liquid Equilibria5. Modification in COSMO-SAC6. Particle Swarm Optimization and application to LLE7. Cuckoo Search Optimization and application to LLE

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Book SynopsisFor more than four decades, scientists and researchers have relied on the Advances in Chromatography series for the most up-to-date information on a wide range of developments in chromatographic methods and applications. Volume 44 of this authoritative series once again compiles the work of expert contributors in order to present timely and cutting-edge reviews on a variety of related topics.Each author's clear presentation of topics and vivid illustrations make the material in Advances in Chromatography: Volume 44 accessible and engaging to biochemists and analytical, organic, polymer, and pharmaceutical chemists at all levels of technical skill.Table of ContentsSeparations in Multiple-Channel Microchips. Temperature Effects in Liquid Chromatography. Lipophilicity Measurements by Liquid Chromatography. Concepts and Practice of Multidimensional High-Performance Liquid Chromatography. High-Performance Liquid Chromatography in the Pharmaceutical Industry: Application, Validation, and Regulatory Issues. The Use of Polysaccharide Phases in the Separation of Enantiomers. Chaotropic Effects in RP-HPLC. Chromatography of Difficult and Water-Insoluble Proteins with Organic Solvents.

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Book SynopsisThe third edition of this popular work is revised to include the latest developments in this fast-changing field. Its interdisciplinary approach elegantly combines the chemistry and engineering to explore the fundamentals and optimization processes involved.Trade Review"I would not hesitate to recommend it to anyone working in this field." Chromatographia "Overall the coverage is a bit uneven - nevertheless the volume does compile some useful material... In conclusion, this is a comprehensive reference text, which should find its way into the libraries of all companies who are serious about process scale preparative chromatography, whether internally or via outsource contracts." Organic Process Research and Development "This special volume is essential for chemists and engineers working in chemical and pharmaceutical industries, as well as for food technologies, due to the interdisciplinary nature of these preparative chromatographic processes." Advances in Food SciencesTable of ContentsPreface xv About the Editors xvii List of Abbreviations xix Notation xxiii 1 Introduction 1Henner Schmidt-Traub and Reinhard Ditz 1.1 Chromatography, Development, and Future Trends 1 1.2 Focus of the Book 4 1.3 Suggestions on How to Read this Book 4 References 6 2 Fundamentals and General Terminology 9Andreas Seidel-Morgenstern 2.1 Principles and Features of Chromatography 9 2.2 Analysis and Description of Chromatograms 13 2.2.1 Voidage and Porosity 13 2.2.2 Retention Times and Capacity Factors 16 2.2.3 Efficiency of Chromatographic Separations 17 2.2.4 Resolution 20 2.2.5 Pressure Drop 23 2.3 Mass Transfer and Fluid Dynamics 25 2.3.1 Principles of Mass Transfer 25 2.3.2 Fluid Distribution in the Column 27 2.3.3 Packing Nonidealities 28 2.3.4 Extra-Column Effects 29 2.4 Equilibrium Thermodynamics 29 2.4.1 Definition of Isotherms 29 2.4.2 Models of Isotherms 31 2.4.2.1 Single-Component Isotherms 31 2.4.2.2 Multicomponent Isotherms Based on the Langmuir Model 33 2.4.2.3 Competitive Isotherms Based on the Ideal Adsorbed Solution Theory 34 2.4.2.4 Steric Mass Action Isotherms 37 2.4.3 Relation Between Isotherms and Band Shapes 38 2.5 Column Overloading and Operating Modes 44 2.5.1 Overloading Strategies 44 2.5.2 Beyond Isocratic Batch Elution 45 References 46 3 Stationary Phases 49Michael Schulte 3.1 Survey of Packings and Stationary Phases 49 3.2 Inorganic Sorbents 50 3.2.1 Activated Carbons 50 3.2.2 Synthetic Zeolites 54 3.2.3 Porous Oxides: Silica, Activated Alumina, Titania, Zirconia, and Magnesia 54 3.2.4 Silica 55 3.2.4.1 Surface Chemistry 57 3.2.4.2 Mass Loadability 59 3.2.5 Diatomaceous Earth 59 3.2.6 Reversed Phase Silicas 60 3.2.6.1 Silanization of the Silica Surface 60 3.2.6.2 Silanization 60 3.2.6.3 Starting Silanes 61 3.2.6.4 Parent Porous Silica 61 3.2.6.5 Reaction and Reaction Conditions 62 3.2.6.6 Endcapping 62 3.2.6.7 Chromatographic Characterization of Reversed Phase Silicas 63 3.2.6.8 Chromatographic Performance 63 3.2.6.9 Hydrophobic Properties Retention Factor (Amount of Organic Solvent for Elution), Selectivity 65 3.2.6.10 Shape Selectivity 65 3.2.6.11 Silanol Activity 67 3.2.6.12 Purity 68 3.2.6.13 Improved pH Stability Silica 68 3.2.7 Aluminum Oxide 69 3.2.8 Titanium Dioxide 70 3.2.9 Other Oxides 71 3.2.9.1 Magnesium Oxide 71 3.2.9.2 Zirconium Dioxide 71 3.2.10 Porous Glasses 72 3.3 Cross-Linked Organic Polymers 73 3.3.1 General Aspects 74 3.3.2 Hydrophobic Polymer Stationary Phases 77 3.3.3 Hydrophilic Polymer Stationary Phases 78 3.3.4 Ion Exchange (IEX) 79 3.3.4.1 Optimization of Ion-Exchange Resins 81 3.3.5 Mixed Mode 88 3.3.6 Hydroxyapatite 88 3.3.7 Designed Adsorbents 91 3.3.7.1 Protein A Affinity Sorbents 91 3.3.7.2 Other IgG Receptor Proteins: Protein G and Protein L 96 3.3.7.3 Sorbents for Derivatized/Tagged Compounds: Immobilized Metal Affinity Chromatography (IMAC) 96 3.3.7.4 Other Tag-Based Affinity Sorbents 101 3.3.8 Customized Adsorbents 102 3.3.8.1 Low Molecular Weight Ligands 105 3.3.8.2 Natural Polymers (Proteins, Polynucleotides) 108 3.3.8.3 Artificial Polymers 111 3.4 Advective Chromatographic Materials 111 3.4.1 Adsorptive Membranes and Grafted-Polymer Membranes 114 3.4.2 Adsorptive Nonwovens 115 3.4.3 Fiber/Particle Composites 117 3.4.4 Area-Enhanced Fibers 117 3.4.5 Monolith 118 3.4.6 Chromatographic Materials for Larger Molecules 121 3.5 Chiral Stationary Phases 121 3.5.1 Cellulose- and Amylose-Based CSP 122 3.5.2 Antibiotic CSP 128 3.5.3 Cyclofructan-Based CSP 128 3.5.4 Synthetic Polymers 128 3.5.5 Targeted Selector Design 130 3.5.6 Further Developments 132 3.6 Properties of Packings and Their Relevance to Chromatographic Performance 132 3.6.1 Chemical and Physical Bulk Properties 132 3.6.2 Morphology 133 3.6.3 Particulate Adsorbents: Particle Size and Size Distribution 133 3.6.4 Pore Texture 134 3.6.5 Pore Structural Parameters 137 3.6.6 Comparative Rating of Columns 137 3.7 Sorbent Maintenance and Regeneration 138 3.7.1 Cleaning in Place (CIP) 138 3.7.2 CIP for IEX 140 3.7.3 CIP of Protein A Sorbents 140 3.7.4 Conditioning of Silica Surfaces 143 3.7.5 Sanitization in Place (SIP) 145 3.7.6 Column and Adsorbent Storage 145 References 146 4 Selection of Chromatographic Systems 159Michael Schulte 4.1 Definition of the Task 164 4.2 Mobile Phases for Liquid Chromatography 167 4.2.1 Stability 168 4.2.2 Safety Concerns 172 4.2.3 Operating Conditions 172 4.2.4 Aqueous Buffer Systems 176 4.3 Adsorbent and Phase Systems 178 4.3.1 Choice of Phase System Dependent on Solubility 178 4.3.2 Improving Loadability for Poor Solubilities 180 4.3.3 Dependency of Solubility on Sample Purity 183 4.3.4 Generic Gradients for Fast Separations 184 4.4 Criteria for Choosing Normal Phase Systems 184 4.4.1 Retention in NP Systems 186 4.4.2 Solvent Strength in Liquid–Solid Chromatography 188 4.4.3 Pilot Technique Thin-Layer Chromatography Using the PRISMA Model 190 4.4.3.1 Step (1): Solvent Strength Adjustment 199 4.4.3.2 Step (2): Optimization of Selectivity 199 4.4.3.3 Step (3): Final Optimization of the Solvent Strength 200 4.4.3.4 Step (4): Determination of the Optimum Mobile Phase Composition 200 4.4.4 Strategy for an Industrial Preparative Chromatography Laboratory 202 4.4.4.1 Standard Gradient Elution Method on Silica 203 4.4.4.2 Simplified Procedure 204 4.5 Criteria for Choosing Reversed Phase Systems 206 4.5.1 Retention and Selectivity in RP Systems 208 4.5.2 Gradient Elution for Small Amounts of Product on RP Columns 212 4.5.3 Rigorous Optimization for Isocratic Runs 213 4.5.4 Rigorous Optimization for Gradient Runs 217 4.5.5 Practical Recommendations 222 4.6 Criteria for Choosing CSP Systems 223 4.6.1 Suitability of Preparative CSP 223 4.6.2 Development of Enantioselectivity 224 4.6.3 Optimization of Separation Conditions 226 4.6.3.1 Determination of Racemate Solubility 226 4.6.3.2 Selection of Elution Order 226 4.6.3.3 Optimization of Mobile/Stationary Phase Composition, Including Temperature 226 4.6.3.4 Determination of Optimum Separation Step 227 4.6.4 Practical Recommendations 227 4.7 Downstream Processing of mAbs Using Protein A and IEX 231 4.8 Size-Exclusion Chromatography (SEC) 236 4.9 Overall Chromatographic System Optimization 237 4.9.1 Conflicts During Optimization of Chromatographic Systems 237 4.9.2 Stationary Phase Gradients 241 References 246 5 Process Concepts 251Malte Kaspereit and Henner Schmidt-Traub 5.1 Discontinuous Processes 252 5.1.1 Isocratic Operation 252 5.1.2 Gradient Chromatography 253 5.1.3 Closed-Loop Recycling Chromatography 256 5.1.4 Steady-State Recycling Chromatography (SSRC) 258 5.1.5 Flip-Flop Chromatography 259 5.1.6 Chromatographic Batch Reactors 260 5.2 Continuous Processes 261 5.2.1 Column Switching Chromatography 262 5.2.2 Annular Chromatography 262 5.2.3 Multiport Switching Valve Chromatography (ISEP/CSEP) 263 5.2.4 Isocratic Simulated Moving Bed (SMB) Chromatography 264 5.2.5 SMB Chromatography with Variable Process Conditions 268 5.2.5.1 Varicol 269 5.2.5.2 PowerFeed 270 5.2.5.3 Partial-Feed, Partial-Discard, and Fractionation-Feedback Concepts 271 5.2.5.4 Improved/Intermittent SMB (iSMB) 271 5.2.5.5 Modicon 273 5.2.5.6 FF-SMB 273 5.2.6 Gradient SMB Chromatography 274 5.2.7 Supercritical Fluid Chromatography (SFC) 275 5.2.7.1 Supercritical Batch Chromatography 276 5.2.7.2 Supercritical SMB processes 277 5.2.8 Multicomponent Separations 277 5.2.9 Multicolumn Systems for Bioseparations 278 5.2.9.1 Multicolumn Capture Chromatography (MCC) 279 5.2.9.2 Multicolumn Countercurrent Solvent Gradient Purification (MCSGP) 286 5.2.10 Countercurrent Chromatographic Reactors 288 5.2.10.1 SMB Reactor 288 5.2.10.2 SMB Reactors with Distributed Functionalities 290 5.3 Choice of Process Concepts 292 5.3.1 Scale 292 5.3.2 Range of k’ 292 5.3.3 Number of Fractions 293 5.3.4 Example 1: Lab Scale; Two Fractions 293 5.3.5 Example 2: Lab Scale; Three or More Fractions 294 5.3.6 Example 3: Production Scale; Wide Range of k’ 296 5.3.7 Example 4: Production Scale; Two Main Fractions 297 5.3.8 Example 5: Production Scale; Three Fractions 298 5.3.9 Example 6: Production Scale; Multistage Process 300 References 302 6 Modeling of Chromatographic Processes 311Andreas Seidel-Morgenstern 6.1 Introduction 311 6.2 Models for Single Chromatographic Columns 311 6.2.1 Equilibrium Stage Models 312 6.2.1.1 Discontinuous Model According to Craig 313 6.2.1.2 Continuous Model According to Martin and Synge 315 6.2.2 Derivation of Continuous Mass Balance Equations 316 6.2.2.1 Mass Balance Equations 318 6.2.2.2 Convective Transport 320 6.2.2.3 Axial Dispersion 320 6.2.2.4 Intraparticle Diffusion 321 6.2.2.5 Mass Transfer Between Phases 321 6.2.2.6 Finite Rates of Adsorption and Desorption 322 6.2.2.7 Adsorption Equilibria 323 6.2.3 Equilibrium Model of Chromatography 323 6.2.4 Models with One Band Broadening Effect 329 6.2.4.1 Equilibrium Dispersion Model 329 6.2.4.2 Finite Adsorption Rate Model 331 6.2.5 Continuous Lumped Rate Models 331 6.2.5.1 Transport Dispersion Models 332 6.2.5.2 Lumped Finite Adsorption Rate Model 333 6.2.6 General Rate Models 333 6.2.7 Initial and Boundary Conditions of the Column 335 6.2.8 Dimensionless Model Equations 336 6.2.9 Comparison of Different Model Approaches 338 6.3 Including Effects Outside the Columns 343 6.3.1 Experimental Setup and Simulation Flow Sheet 343 6.3.2 Modeling Extra-Column Equipment 345 6.3.2.1 Injection System 345 6.3.2.2 Piping 345 6.3.2.3 Detector 345 6.4 Calculation Methods and Software 346 6.4.1 Analytical Solutions 346 6.4.2 Numerical Solution Methods 346 6.4.2.1 Discretization 346 6.4.2.2 General Solution Procedure and Software 349 References 350 7 Determination of Model Parameters 355Andreas Seidel-Morgenstern, Andreas Jupke, and Henner Schmidt-Traub 7.1 Parameter Classes for Chromatographic Separations 355 7.1.1 Design Parameters 355 7.1.2 Operating Parameters 356 7.1.3 Model Parameters 356 7.2 Concept to Determine Model Parameters 357 7.3 Detectors and Parameter Estimation 359 7.3.1 Calibration of Detectors 359 7.3.2 Parameter Estimation 360 7.3.3 Evaluation of Chromatograms 362 7.4 Determination of Packing Parameters 363 7.4.1 Void Fraction and Porosity of the Packing 363 7.4.2 Axial Dispersion 363 7.4.3 Pressure Drop 364 7.5 Adsorption Isotherms 365 7.5.1 Determination of Adsorption Isotherms 365 7.5.2 Estimation of Henry Coefficients 365 7.5.3 Static Isotherm Determination Methods 370 7.5.3.1 Batch Method 370 7.5.3.2 Adsorption–Desorption Method 370 7.5.3.3 Circulation Method 371 7.5.4 Dynamic Methods 371 7.5.5 Frontal Analysis 371 7.5.6 Analysis of Dispersed Fronts 378 7.5.7 Peak Maximum Method 380 7.5.8 Minor Disturbance/Perturbation Method 380 7.5.9 Curve Fitting of the Chromatogram 383 7.5.10 Data Analysis and Accuracy 384 7.6 Mass Transfer Kinetics 386 7.6.1 Correlations 386 7.6.2 Application of Method of Moments 388 7.7 Plant Parameters 389 7.8 Experimental Validation of Column Models and Model Parameters 391 7.8.1 Batch Chromatography 391 7.8.2 Simulated Moving Bed Chromatography 394 7.8.2.1 Model Formulation and Parameters 394 7.8.2.2 Experimental Validation 400 References 404 8 Process Design and Optimization 409Andreas Jupke, Andreas Biselli, Malte Kaspereit,Martin Leipnitz, and Henner Schmidt-Traub 8.1 Basic Principles and Definitions 409 8.1.1 Performance, Costs, and Objective Functions 409 8.1.1.1 Performance Criteria 410 8.1.1.2 Economic Criteria 411 8.1.1.3 Objective Functions 412 8.1.2 Degrees of Freedom 413 8.1.2.1 Categories of Parameters 413 8.1.2.2 Dimensionless Operating and Design Parameters 414 8.1.3 Scaling by Dimensionless Parameters 418 8.1.3.1 Influence of Different HETP Coefficients for Every Component 419 8.1.3.2 Influence of Feed Concentration 420 8.1.3.3 Examples for a Single-Column Batch Chromatography 421 8.1.3.4 Examples for SMB Processes 424 8.2 Batch Chromatography 426 8.2.1 Fractionation Mode (Cut Strategy) 426 8.2.2 Design and Optimization of Batch Chromatographic Columns 427 8.2.2.1 Process Performance Depending on Number of Stages and Loading Factor 427 8.2.2.2 Design and Optimization Strategy 432 8.2.2.3 Other Strategies 436 8.3 Recycling Chromatography 437 8.3.1 Design of Steady-State Recycling Chromatography 437 8.3.2 Scale-Up of Closed-Loop Recycling Chromatography 440 8.4 Conventional Isocratic SMB Chromatography 445 8.4.1 Considerations to Optimal Concentration Profiles in SMB Process 445 8.4.2 Process Design Based on TMB Models (Shortcut Methods) 446 8.4.2.1 Triangle Theory for an Ideal Model with Linear Isotherms 447 8.4.2.2 Triangle Theory for an Ideal Model with Nonlinear Isotherms 449 8.4.2.3 Shortcut to Apply the Triangle Theory on a System with Unknown Isotherms Assuming Langmuir Character 452 8.4.3 Process Design and Optimization Based on Rigorous SMB Models 455 8.4.3.1 Estimation of Operating Parameter 456 8.4.3.2 Optimization of Operating Parameters for Linear Isotherms Based on Process Understanding 457 8.4.3.3 Optimization of Operating Parameters for Nonlinear Isotherms Based on Process Understanding 458 8.4.3.4 Optimization of Design Parameters 460 8.5 Isocratic SMB Chromatography Under Variable Operating Conditions 465 8.5.1 Performance Comparison of Varicol and Conventional SMB 466 8.5.2 Performance Comparison of Varicol, PowerFeed, and Modicon with Conventional SMB 470 8.5.3 Performance Trends Applying SMB Concepts Under Variable Operating Conditions 475 8.6 Gradient SMB Chromatography 476 8.6.1 Step Gradient 476 8.6.2 Multicolumn Solvent Gradient Purification Process 482 8.7 Multicolumn Systems for Bioseparations 487 8.7.1 Design of Twin-Column Capture SMB 488 8.7.2 Modeling of Multicolumn Capture processes 490 References 493 9 Process Control 503Sebastian Engell and Achim Kienle 9.1 Standard Process Control 504 9.2 Advanced Process Control 504 9.2.1 Online Optimization of Batch Chromatography 505 9.2.2 Advanced Control of SMB Chromatography 507 9.2.2.1 Purity Control for SMB Processes 508 9.2.2.2 Direct Optimizing Control of SMB Processes 510 9.2.3 Advanced Parameter and State Estimation for SMB Processes 515 9.2.4 Adaptive Cycle-to-Cycle Control 517 9.2.5 Control of Coupled Simulated Moving Bed Processes for the Production of Pure Enantiomers 519 References 521 10 Chromatography Equipment: Engineering and Operation 525Henner Schmidt-Traub and Arthur Susanto 10.1 Challenges for Conceptual Process Design 525 10.1.1 Main Cost Factors for a Chromatographic System 527 10.1.2 Conceptual Process Design 528 10.1.2.1 A Case Study: Large-Scale Biotechnology Project 529 10.2 Engineering Challenges 533 10.2.1 Challenges Regarding Sanitary Design 535 10.2.2 Challenges During Acceptance Tests and Qualifications 539 10.3 Commercial Chromatography Columns 540 10.3.1 General Design 541 10.3.1.1 Manually Moved Piston 542 10.3.1.2 Electrically or Hydraulically Moved Piston 542 10.3.2 High- and Low-Pressure Columns 543 10.3.2.1 Chemical Compatibility 544 10.3.2.2 Frit Design 546 10.3.2.3 Special Aspects of Bioseparation 549 10.4 Commercial Chromatographic Systems 551 10.4.1 General Design Aspects: High-Pressure and Low-Pressure Systems 551 10.4.2 Material 553 10.4.3 Batch Low-Pressure Liquid Chromatographic (LPLC) Systems 553 10.4.3.1 Inlets 553 10.4.3.2 Valves to Control Flow Direction 555 10.4.3.3 Pumps 556 10.4.3.4 Pump- and Valve-Based and Gradient Formation 556 10.4.4 Batch High-Pressure Liquid Chromatography 558 10.4.4.1 General Layout 558 10.4.4.2 Inlets and Outlets 559 10.4.4.3 Pumps 559 10.4.4.4 Valves and Pipes 562 10.4.5 Continuous Systems: Simulated Moving Bed 563 10.4.5.1 General Layout 563 10.4.5.2 A Key Choice: The Recycling Strategy 565 10.4.5.3 Pumps, Inlets, and Outlets 566 10.4.5.4 Valves and Piping 566 10.4.6 Auxiliary Systems 567 10.4.6.1 Slurry Preparation Tank 567 10.4.6.2 Slurry Pumps and Packing Stations 568 10.4.6.3 Cranes and Transport Units 568 10.4.6.4 Filter Integrity Test 568 10.4.7 Detectors 569 10.5 Packing Methods 571 10.5.1 Column and Packing Methodology Selection 571 10.5.2 Slurry Preparation 572 10.5.3 Column Preparation 574 10.5.4 Flow Packing 575 10.5.5 Dynamic Axial Compression (DAC) Packing 577 10.5.6 Stall Packing 577 10.5.7 Combined Method (Stall+DAC) 578 10.5.8 Vacuum Packing 580 10.5.9 Vibration Packing 581 10.5.10 Column Equilibration 582 10.5.11 Column Testing and Storage 583 10.5.11.1 Test Systems 583 10.5.11.2 Hydrodynamic Properties and Column Efficiency 584 10.5.11.3 Column and Adsorbent Storage 585 10.6 Process Troubleshooting 585 10.6.1 Technical Failures 586 10.6.2 Loss of Performance 587 10.6.2.1 Pressure Increase 587 10.6.2.2 Loss of Column Efficiency 590 10.6.2.3 Variation of Elution Profile 591 10.6.2.4 Loss of Purity/Yield 592 10.6.3 Column Stability 592 10.7 Disposable Technology for Bioseparations 593 10.7.1 Prepacked Columns 596 10.7.2 Membrane Chromatography 597 References 599 Appendix A Data of Test Systems 601 A.1 EMD53986 601 A.2 Tröger’s Base 602 A.3 Glucose and Fructose 604 A.4 β-Phenethyl Acetate 606 References 607 Index 609

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Book SynopsisChromatography has been developed as a powerful and rapid technique for the separation of compounds with highly similar molecular characteristics, even from complicated matrices. Due to their excellent separation characteristics and Versatility, chromatographic methods have found growing acceptance and application in environmental protection for residue analysis in air, ground and surface waters, sewage, sludge, soil matrices, etc The book will be of interest to analytical chemists in legalisation and research and to analytical control specialists, as well as to researchers and students.Table of Contents1. Separation Strategies for Environmental Pollutants: Theory and Practice 2. Hydrocarbons and Hydrocarbon-Based Pollutants 3. Aromatic and Polyaromatic Pollutants 4. Pesticides

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Book SynopsisChromatography is a technique for analyzing or separating mixtures. The first edition of Chromatography: Concepts and Contrasts, published in 1988, was one of the first books to discuss all the different types of chromatography under one cover and is still very popular today.Table of ContentsPreface to Second Edition. Acknowledgments. Preface to the First Edition. Symbols, Abbreviations, and Acronyms. 1 Impact of Industrial and Government Regulatory Practices on Analytical Chromatography. 1.1 Locus of Chromatography in Chemical Industry. 1.2 Governmental Organizations. 1.3 Nongovernmental Agencies. 1.4 Standards, Calibration, and NIST. 1.5 USP and Other Pharmacopoeias. 1.6 International Guidelines for Analytical Laboratories. 1.7 Final Comments. References. 2 Introduction to Chromatography. 2.1 Brief History. 2.2 Definitions and Classifications. 2.3 Summary. References. 3 Band Broadening and Kinetics. 3.1 Configurations of the Stationary Phase. 3.2 Rate Theory. References. 4 Physical Forces and Interactions. 4.1 Intermolecular and Interionic Forces. 4.2 Size Exclusion—Molecular Sieving. 4.3 Some Models. References. 5 Optimization and the Achievement of Separation. 5.1 Kinetics and Zone Broadening. 5.2 Thermodynamics and Zone Migration. 5.2 Achievement of Separation. 5.4 Optimization of Separations. References. 6 Comparisons Between Chromatographic Modes. 6.1 Gas Chromatography Compared to Liquid Chromatography. 6.2 Supercritical Fluids and Supercritical Fluid Chromatography. 6.3 Reduced Parameters. 6.4 Columnar and Planar Configurations. References. 7 Gas Chromatography. 7.1 Early History, Theories, and Classifications. 7.2 Instrumentation for Capillary GC. 7.3 Instrumentation for Packed-Column GC. 7.4 Stationary Phase. 7.5 Temperature Effects. 7.6 Special Topics. 7.7 Summary and Evaluation. References. 8 Liquid Chromatography in Columns. 8.1 Introductory Classifications. 8.2 Classification of HPLC Modes. 8.3 Instrumentation. 8.4 Reversed-Phase Method Development and Optimization. 8.5 RP-HPLC Alternatives for the Pharmaceutical Industry. 8.6 Preparative LC. 8.7 Special Topics. 8.8 Summary and Evaluation. References. 9 Quantitation: Detectors and Methods. 9.1 Detectors. 9.2 Data Acquisition and Processing. 9.3 Quantitative Analysis. References. 10 Chromatography with Mass Spectral Detection (GC/MS and LC/MS). 10.1 Basics of Mass Spectrometry. 10.2 Gas ChromatographyrMass Spectrometry. 10.3 Liquid ChromatographyrMass Spectrometry. 10.4 Other Hyphenated Methods. 10.5 Summary. References. 11 Liquid Chromatography on Plane Surfaces. 11.1 Paper Chromatography. 11.2 Thin-Layer Chromatography. 11.3 Other Topics. 11.4 Literature Summary and Applications. References. 12 Qualitative Analysis. 12.1 Retention Parameters. 12.2 Other Methods of Qualitative Analysis. References. 13 Capillary Electrophoresis and Capillary Electrochromatography 365 13.1 Principles of Electrophoresis. 13.2 Zone Electrophoresis. 13.3 Capillary Electrophoresis. 13.4 Capillary Electrochromatography. References. 14 Sample Preparation. 14.1 Extraction. 14.2 Dialysis. 14.3 Derivatization. References. 15 Special Applications. 15.1 Multidimensional Chromatography. 15.2 Biological Applications. 15.3 Chiral Separations. 15.4 Other Topics. References. 16 Selection of a Method. 16.1 Methods of Attack. 16.2 The Internet. 16.3 Experimental Approach. 16.4 Summary. References. Some Internet Web Sites of Interest to Chromatographers. Appendix A ICH Glossary. Appendix B. Index.

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Book SynopsisThis revision brings the reader completely up to date on the evolving methods associated with increasingly more complex sample types analyzed using high-performance liquid chromatography, or HPLC.Table of ContentsGetting Started. Basics of Separation. Detection Sensitivity and Selectivity. Sample Preparation. The Column. Non-Ionic Samples: Reversed- and Normal-Phase HPLC. Ionic Samples: Reversed-Phase, Ion-Pair, and Ion-Exchange HPLC. Gradient Elution. Systematic Approach to the Reversed-Phase Separation of Regular Samples. Computer-Assisted Method Development. Biochemical Samples: Proteins, Nucleic Acids, Carbohydrates, and Related Compounds. Chiral Separations. Preparative HPLC Separation. Quantitation (Including Trace Analysis). Completing the Method: Validation and Transfer. Appendices. Index.

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Book SynopsisDealing with the principles of calibration--both the theoretical and mathematical constructs which relate features of calibration equations to the physical phenomena that affect instruments and samples used on generating information.Table of ContentsPrinciples of Calibration. Calibration Practice. Prediction. Appendices. Index.

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Book SynopsisA comprehensive manual for the analyst (or chromatographer) for evaluating and using the various tandem systems obtained by combining different methods of chromatography and spectroscopy. It introduces the reader to the different separation techniques that can be combined with spectroscopic techniques.Table of ContentsPartial table of contents: INTRODUCTION TO TANDEM SYSTEMS. Identification Techniques for Tandem Use. Interface Conduits. GAS CHROMATOGRAPHY TANDEM SYSTEMS. Gas Chromatography IR Spectroscopy (GC/IR) Tandem Systems. Gas Chromatography/Atomic Spectroscopy (GC/AS) Tandem Systems. LIQUID CHROMATOGRAPHY TANDEM SYSTEMS. LC/IR Tandem Systems. Liquid Chromatography/Atomic Spectroscopy (LC/AS) Tandem Systems. OTHER TANDEM SYSTEMS. Thin Layer Chromatography/Spectroscopy Tandem Systems. Electrophoresis/Spectroscopy Tandem Systems. Index.

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Book SynopsisPreparative Enantioselective Chromatography Geoffrey B Cox The development of chiral liquid chromatography, facilitating the straightforward separation of enantiomers, was a significant advance in chromatography, leading to widespread application in analytical chemistry.Trade Review"With such a good coverage of the topics and a generous collection of references, the book is a pleasure to read and refer to. The book has struck almost exactly the right note in attractiveness of purpose and method of presentation. The book has a distinctly readable quality. Both the editor and the authors are to be commended for sharing their insights and experience in such an easily accessed volume. The entire volume is lavishly illustrated with tables, graphs and drawings, the design and execution and placement of which are as perfect as the text material they illustrate." Current Engineering Practice 'The book is a delight to read.' 'Cox's book provides chemists and chemical engineers with valuable hints and advises. The authors are, in part, experienced practitioners in the industry and academics at the forefront of this field...at every stage, material is logically presented and easy to access.' 'In summary, this is an excellent compiled book with well-produced text' Gregor Mann, Organic Process Research and Development, September 2005 "This book represents a valuable source of information on the multifaceted challenges one may encounter when performing preparative chromatographic enantiomer seperations, and large-scale chromatography in general ... [this] account will be warmly welcomed by clientele from both industry and academia, as it offers insightful and enjoyable reading, even to the expert." Analytical and Bioanalytical ChemistryTable of ContentsContributors. Preface. 1. Chiral Chromatography in Support of Pharmaceutical Process Research (Christopher J. Welch). 2. Introduction to Preparative Chromatography (Geoffrey B. Cox). 3. Chiral Stationary Phases for Preparative Enantioselective Chromatography (Eric Francotte). 4. Method Development for Preparative Enantioselective Chromatography (Christina Suteu). 5. Scaling-Up of Preparative Chromatographic Enantiomer Separations (Jules Dingenen). 6. Steady-State Recycling and Its use in Chiral Separations (Charles M. Grill and Laurence M. Miller). 7. Simulated Moving Bed and Related Techniques (Luís S. Pais, Vera G. Mata and Alírio E. Rodrigues). 8. Preparative-Scale Supercritical Fluid Chromatography (Manon S. Villeneuve and Luke A. Miller). 9. Equipment for Preparative and Large Size Enantioselective Chromatography (Henri Colin, Olivier Ludemann-Hombourger and Félicie Denet). 10. Case Study in Production-Scale Multicolumn Continuous Chromatography (Michel Hamende). 11. Contract Manufacturing and Outsourcing Considerations (Olivier Dapremont). Appendix: Advanced Concepts. Index.

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Book SynopsisThis book covers the various methods of validation for high performance liquid chromatography - mass spectrometry (LC-MS) analytical techniques and their applications in the analysis of a broad range of drugs in modern clinical pharmacology.Table of ContentsInternal standards for quantitative LC-MS bioanalysis.- Method development, validation and sample analysis for regulated quantitative bioanalysis using LC-MS/MS.- Impact of sampling paper/cards on bioanalytical quantitation via dried blood spots by liquid chromatography - mass spectrometry.- Highly sensitive pharmaceutical and clinical analysis using selective solid-phase extraction coupled to microflow liquid chromatography and isotope-dilution mass spectrometry.- Pitfalls of LC-MS/MS in the clinical laboratory.- Therapeutic drug monitoring to support clinical pharmacogenomics.- Liquid chromatography - mass spectrometry for the determination of antidepressants and some of their major metabolites in human biological matrices.- The analysis of antipsychotic drugs in human biosamples by LC-MS.- Therapeutic drug monitoring of targeted anticancer therapy - tyrosine kinase inhibitors and selective oestrogen receptor modulators: a clinical pharmacology laboratory perspective.- Applications of mass spectrometry in analyses of steroid hormones.- Liquid chromatography - mass spectrometric analysis of tropane alkaloids in mammalian samples: techniques and applications.- Analysis of illicit drugs in human biological samples by LC-MSn.- Use of matrix assisted laser desorption/ionization imaging mass spectrometry (MALDI-IMS) in the development of novel small molecule drugs.- A planar integrated micro mass spectrometer.

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Book SynopsisIn the arena of new drug development, the rate of sample generation far exceeds the rate of sample analysis. LC/MS is an analytical tool that helps the researcher select the most promising sample for scrutiny, accelerating the discovery of new drugs. This book is the first to describe in detail the procedures and benefits of LC/MS applications.Trade Review"…a comprehensive primer and will appeal to laboratory scientists and instructors in the pharmaceutical field…" (Analytical Chemistry, November 2002) "...describes...applications in each phase of drug development...provides perspective on changes in strategies for pharmaceutical analysis..." (SciTech Book News, Vol. 26, No. 2, June 2002) "...useful not only for students and scholars of analytical chemistry, but also for managers and other scientists...another fine addition to the Wiley-InterScience Series on Mass Spectrometry, it should be in the collections of all research libraries." (The Chemist, Summer 2003)Table of ContentsPreface ix Acknowledgments xi 1. Introduction 1 Emerging Analytical Needs 1 Integration of LC/MS into Drug Development 3 Partnerships and Acceptance 6 Overview 10 2. Drug Development Overview 11 Analysis Perspectives 11 The Four Stages of Drug Development 12 Drug Discovery 14 Preclinical Development 15 Clinical Development 16 Manufacturing 17 3. Accelerated Drug Development 19 Accelerated Development Strategies 20 Quantitative and Qualitative Process Elements 20 Quantitative Process Pipeline 24 Qualitative Process Pipeline 25 Motivating Factors 27 Analysis Opportunities for Accelerated Development 28 Full-Time Equivalent 28 Sample Throughput Model 29 Elimination Model 29 Rate-Determining Event Model 31 Accelerated Development Perspectives 33 4. LC/MS Development 34 The Elements of LC/MS Application 34 HPLC 35 Mass Spectrometry 35 LC/MS Interface 36 LC/MS Growth 38 5. Strategies 41 Standard Methods 43 Template Structure Identification 46 Databases 49 Screening 50 Integration 53 Miniaturization 55 Parallel Processing 56 Visualization 58 Automation 61 Summary 63 6. LC/MS Applications 65 Drug Discovery 65 Proteomics 68 Protein Expression Profiling 70 Quantitation 76 Glycoprotein Mapping 78 Natural Products Dereplication 83 Lead Identification Screening 88 Bioaffinity Screening 89 Combinatorial Library Screening 92 Open-Access LC/MS 96 Structure Confirmation 97 High Throughput 100 Purification 102 Combinatorial Mixture Screening 103 In Vivo Drug Screening 106 Pharmacokinetics 109 In Vitro Drug Screening 115 Metabolic Stability Screening 118 Membrane Permeability 119 Drug-Drug Interaction 121 Metabolite Identification 122 Preclinical Development 123 Metabolite Identification 125 Impurity Identification 132 Degradant Identification 140 Clinical Development 145 Quantitative Bioanalysis—Selected Ion Monitoring 148 Quantitative Bioanalysis—Selected Reaction Monitoring 152 Quantitative Bioanalysis—Automated Solid-Phase Extraction 156 Quantitative Bioanalysis—Automated On-Line Extraction 162 Metabolite Identification 165 Degradant Identification 168 Manufacturing 171 Impurity Identification Using Data-Dependent Analysis 173 Peptide Mapping in Quality Control 176 Patent Protection 178 7. Future Applications and Prospects 183 Workstations 183 Multidimensional Analysis 186 Miniaturization 187 Information Management 189 Strategic Outsourcing 190 Summary 191 8. Perspectives on the Future Growth of LC/MS 192 9. Conclusions 195 Glossary 197 References 205 Index 235

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